Nice recent summary of Intel Core i7, Quad, Duo and AMD Phenom X4 with their benchmark performance. As with most other benchmarks I believe the graphics card used is a major factor, in this review the same Nvidia GeForce GTX 280 card was used for all chipset.

All the above contents took up less than half of the USB Disk drive space. I just wish that Microsoft had added more VHDs containing hands on labs or preinstalled developer software as this took a lot of time to set up. There's enough space for a few VPC images so no excuse there!